Abstract: An absorbent pad structure particularly suited for use in a vacuum package for a food product and the like is disclosed as well as its method of manufacture. The composition of the pad is such as to minimize leakage of liquids into the absorbent material during storage and to permit the flow of liquids freely for absorption during cooking of the packaged product. The pad is particularly suitable for use in bacon packages and other food packages containing oils or grease.

Abstract: A package for meat products and other oily foods and similar products marketed in stores and suitable for use to heat or cook the contents by microwave radiation comprising a absorbent insert having as basic elements a cooking surface of waxed paperboard or the like and an absorbent underlay. The cooking surface on which the food is laid is provided apertures so that fats and liquids released from the food during cooking may readily pass therethrough and be captured by the absorbent underlayer.

Abstract: Discolsed are wet wiper products that incorporate antimicrobially-active nonwoven fabrics, preferably comprising: bonded fibers; a binder distributed on said fibers; and an antimicrobial agent distributed on from 10% through 50% of said fibers, said antimicrobial agent being substantive to said fibers such that said antimicrobial agent is prevented from substantially diffusing from said fabric.

Abstract: A method and apparatus is disclosed for the production of a multi-ply sheet product in which separate non-woven fibrous webs are combined into a multi-ply sheet before embossment, embossed as a multi-ply sheet, the embossed webs separated from one another and longitudinally displaced relative to one another, and then recombined into an embossed multi-ply sheet with the embossments out of register with one another. The resulting product exhibits enhanced softness and absorbence as compared with similar products comprising simultaneously embossed multi-ply webs.

Abstract: A method for forming a fabric web by wet-laying fibers on paper-making equipment, the web comprising staple length natural or synthetic fibers and optionally wood cellulose papermaking fibers and an adsorbed polymeric surface active agent. The method comprises making up an aqueous fiber furnish with a polymeric surfactant having a plurality of both hydrophilic and hydrophobic groupings per molecule. The polymeric surfactant is adsorbed by the fibers and may be added to the fibers or it may be included in the aqueous carrier medium. In either case, the finished web contains and is improved by the inclusion of the polymeric surfactant.

Abstract: A strong, highly absorbent hard finished nonwoven toweling fabric consisting of wood pulp and textile fibers free from added binders is prepared by forming a wet-laid web of a blend of fibers containing 50 to 75 weight percent wood pulp and 25 to 50 weight percent staple length synthetic fibers and subjecting the fibers in the wet-laid web to hydroentanglement. The fabric may be apertured or essentially nonapertured and may be made water repellant. The fabric may be used in medical and surgical application, household cloths, food service wipes, industrial machinery wipes and the like.

Abstract: Paper employed in an ion deposition printing process can be made antistatic by incorporating into the paper a composition comprising a water-soluble electrolytic salt, such as sodium sulfate, and a water-miscible organic solvent having a high boiling point, such as glycerine. Being antistatic, the paper does not acquire stray charges of static electricity that interfere with the printing process.

Abstract: Release sheets formed on paper, nonwoven fabric, polymeric film, or extrusion-coated paper substrates are disclosed. The release sheets have a low polar surface energy hydrocarbon undercoating of low elastic modulus interposed between the substrate and a silicone release coating.

Abstract: A method for forming a fibrous web by wet-laying fibers on paper-making equipment, the web comprising staple length natural or synthetic fibers and wood cellulose paper-making fibers wherein a water furnish of the fibers is made up with an associative thickener in the absence of a conventional surfactant. A preferred associative thickener for use with hydrophobic fibers is a urethane block copolymer having a polyethylene glycol backbone, the associative thickener acting as both surfactant and thickener. With predominately cellulosic fibers, i.e. conventional wood cellulose fibers, or a mixture of conventional and contorted wood fibers, and synthetic cellulosic fibers, such as rayon, a hydroxyethyl cellulose having a long alkyl side chain is preferred. Excellent consistency of the water and fiber dispersion is obtained at relatively low viscosity with rapid drainage of water from the wire and uniform formation of the web.

Abstract: A strong, absorbent nonwoven fabric containing wood pulp and textile fibers is prepared by hydroentanglement with a continuous filament, base web. The fabric may be apertured or essentially nonapertured and may be made water repellant for use in medical and surgical applications.

Abstract: An ink jet printing substrate particularly useful as a coating for paper for multi-color, water base ink jet printing consisting essentially of a high swelling montmorillonite clay, and optionally including a high surface area pigment, such as a synthetic silica or calcium carbonate and a water-insoluble binder.

Abstract: An elastic nonwoven fabric is made up of staple textile fibers or wood pulp, or both hydroentangled with an elastic web or net of a thermoplastic elastic polymer.

Abstract: A nonwoven fibrous web is disclosed having high wet tensile strength when packed in a preservative liquid load, yet which breaks up under mild agitation conditions in a wet environment such as by the flushing action of a toilet. The wiper includes a nonwoven web made of a special blend of cellulosic fibers held together only by friction and naturally occurring hydrogen bonding. No binder is necessary to hold together the fibers. Derivatization of the fibers is not necessary for their breakapartability. The nonwoven fibrous web is produced by subjecting a wet-laid web of cellulosic fibers to hydroentanglement and drying the web without addition of a bonding agent.

Abstract: A method of forming a container from a flat, substantially homogeneous blank of fibrous substrate, comprising the steps of shaping the blank into a formed container having a bottom wall, an up-turned side wall extending from the bottom wall, a rim outwardly extending from the side wall and a lip downwardly curving from the rim and including a plurality of radially-extending, circumferentially-spaced pleats formed in the side wall, rim, and lip, each pleat including at least three layers of the blank; and applying sufficient heat and pressure to the side wall and rim to decrease the thickness thereof to less than that of the blank and to transform each pleat into a substantially integrated fibrous structure in which the constituent layers generally lack individual identity, each structure having a density greater than and a thickness substantially equal to adjacent areas of the side wall and rim.

Abstract: Reclosable carton structure of a generally rectangular configuration is set up from a paperboard blank. A hooded cover is hingedly mounted over the open top of the carton and includes a serrated cutter bar extending along a free edge of the cover. A flap on the blank is folded to extend over and is adhered along its free edge to the inside of the carton wall underlying the portion of the hooded cover that includes the cutter bar. A tab is formed in the same carton wall by a knife cut main portion parallel to the fold of the flap and a pair of end portions each extending transversely of and from an end of the main portion, both end portions terminating between the fold and the adhered edge. Resilience of the paperboard, in combination with cooperative dispositions of the flap and the tab, causes the tab to be pivotally urged outwardly from the surface of the wall, pivotation occurring when the hooded cover is open.

Abstract: This invention is a paperboard container comprising a bottom wall, an upwardly extending side wall, a first curved portion joining the side wall to the periphery of the bottom wall, an outwardly extending rim, a second curved portion joining the rim to the periphery of the side wall, and a downwardly curved lip outwardly extending from the periphery of the rim. The container is integrally formed from a substantially homogeneous paperboard blank by a press such that the thickness of the side wall, second curved portion and rim is less than that of the bottom wall, first curved portion and lip. The container includes a plurality of densified regions radially extending through and circumferentially spaced about annular sections of the side wall, second curved portion and rim.

Abstract: A press for forming sheet material into a shaped article comprising a frame, first and second complementary dies, a cam supported by the frame for reciprocally moving the first die along an axis between a first position axially spaced from the second die and a second position fully mated with the second die, the cam including a dwell period when the first die is in the second position. The press includes a bolster supporting the second die for axial movement between upper and lower limits, the bolster being axially spaced from the upper limit by movement of the first die to the second position. The press also includes a hydraulic power circuit responsive to the position of the cam for normally biasing the bolster toward its upper limit under a first hydraulic pressure and for biasing the bolster toward the upper limit under a second hydraulic pressure during the dwell period, the second hydraulic pressure being greater than the first hydraulic pressure.

Abstract: There is disclosed a package formed of a carton stock having front and rear main panels, side panels, and a set of end closure flaps, which comprises dust flaps, a cover flap, and a sealing flap, and coated, at least on the end closure flap, with a heat sealing coating which is cut and scored in a manner such that the sealing flap can be pulled away from the cover flap and the cover flap broken away to open the carton. The sealing flap has a tuck-in tab and the cover flap a complementary punch-in for effecting reclosing of the package.

Abstract: There is disclosed a cover for a container for food, for example, popcorn. The container has a rim on which is sealed an expandable foil cover. A paperboard cover overlies this foil cover and is held in place by a flange on the rim which is bent over or crimped onto the pressboard. The cover has a removable central portion, e.g., formed by concentric half-cut sores, and an annular portion, which is crimped between the flange and the rim. The cover has a pull tab extending beyond this annular portion and the concentric half-cut scores curve up to the pull tab. The pull tab can be folded over on a press core and crimped under the flange. The annular portion comprises an inner and outer zone, the outer one of which comprises a plurality of tabs projecting from the inner zone. These tabs may have different shapes, for example, they are preferably arcuate so as to give the outer zone a scalloped appearance.

Abstract: The invention relates to a process for producing essentially pure cellulose granules which comprises treating finely-divided particles of essentially pure cellulose in aqueous suspension with an agglutinating reagent which promotes agglutination of said particles, causing said particles to agglutinate, and mechanically separating the agglutinated cellulose particles from the suspension medium leaving a wet mass of agglutinates, washing said wet mass with water until said agglutinating reagent has been removed therefrom, leaving a second wet mass consisting essentially of agglutinated cellulose particles and water, and displacing the water with a solvent which is solvent for water but non-solvent for cellulose, and removing the water from said second wet mass by a non-evaporative procedure wherein coalescence of said agglutinated particles is prevented and said agglutinated particles dry into discrete granules of essentially pure cellulose.